ID/
Icons
Diagnostic Action Comments
71 Parameter storage malfunction Turn off the power, wait 5 seconds and turn on
the power again. If the failure continues then
contact your local Siemens representative
72 Internal error in sensor Contact your local Siemens representative
73 Internal error in sensor Contact your local Siemens representative
74 Internal error in sensor Contact your local Siemens representative
75 Internal error in sensor Contact your local Siemens representative
76 Internal error in sensor Contact your local Siemens representative
77 Internal error in sensor Contact your local Siemens representative
78 Unstable measurement condi‐
tion
Check if air is present in the liquid and that the
flowmeter is operated within its specifications.
Diagnosing and troubleshooting
10.2 Fault codes and corrective actions
MASS 2100 & FC300 (FCT030)
Operating Instructions, 06/2017, A5E39789040-AA 193